1、Designation: C1277 12C1277 14Standard Specification forShielded Couplings Joining Hubless Cast Iron Soil Pipe andFittings1This standard is issued under the fixed designation C1277; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, th
2、e year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the materials and testing of shielded hubless couplings to join hubless cast iron
3、soil pipe andfittings.1.2 Several different types of hubless couplings are available for use in hubless cast iron sanitary and storm drain, waste andvent piping applications to connect hubless cast iron soil pipe and fittings by using a sleeve-type, or some other type couplingdevice. It is the purpo
4、se of this specification to furnish information as to the characteristics of one such sleeve type couplings whenapplied to cast iron soil pipe and fittings manufactured in accordance with Specification A888, latest revision, and CISPI-301, latestrevision.1.3 The values stated in inch-pound units are
5、 to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.4 The committee with jurisdiction over this standard is aware of other comparable standard published by the Cast Iron SoilPipe
6、 Institute, CISPI-310, FM 1680 published by Factory Mutual, and Specification C1540 published by ASTM.1.5 The following precautionary caveat pertains only to the test method portion, Section 7, of this specification. This standarddoes not purport to address all of the safety concerns, if any, associ
7、ated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A240/A240M Specification for Chromium and Chromium-Nickel Sta
8、inless Steel Plate, Sheet, and Strip for Pressure Vessels andfor General ApplicationsA644 Terminology Relating to Iron CastingsA888 Specification for Hubless Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent PipingApplicationsC564 Specification for Rubber Gaskets for Cas
9、t Iron Soil Pipe and FittingsC1540 Specification for Heavy Duty Shielded Couplings Joining Hubless Cast Iron Soil Pipe and FittingsD3677 Test Methods for RubberIdentification by Infrared Spectrophotometry2.2 CISPI Standard:CISPI-301 Specification for Hubless Cast Iron Soil Pipe and Fittings for Sani
10、tary and Storm Drain, Waste and Vent PipingApplications3CISPI-310 Specification for Couplings for Use in Connection with Hubless Cast Iron Soil Pipe and Fittings for Sanitary andStorm Drain, Waste, and Vent Piping Applications31 This specification is under the jurisdiction of ASTM Committee A04 on I
11、ron Castings and is the direct responsibility of Subcommittee A04.75 on Gaskets and Couplingfor Plumbing and Sewer Piping.Current edition approved Dec. 1, 2012May 1, 2014. Published January 2013June 2014. Originally approved in 1994. Last previous edition approved in 20112012 asC1277 11.C1277 12. DO
12、I: 10.1520/C1277-12.10.1520/C1277-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from Cast Ir
13、on Soil Pipe Institute (CISPI), 5959 Shallowford Rd., Suite 419, Chattanooga, TN 37421,3008 Preston Station Drive, Hixson, TN 37343,http:/www.cispi.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to t
14、he previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright
15、ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.3 Factory Mutual Standard:FM 1680 Couplings Used in Hubless Cast Iron Systems for Drain, Waste or Vent, Sewer, Rainwater or Storm Water System,Above or Below Ground, Industrial, Commercial and R
16、esidential43. Terminology3.1 Definitions of the following terms used in this specification are found in Terminology A644, elastomeric and durometer.3.2 Definitions of Terms Specific to This Standard:3.2.1 center stop, nan integral part of the gasket centered on the axial length of the gasket intende
17、d to limit the insertion depthof the pipe to be coupled.3.2.2 clamp assembly, nthat portion of the coupling excluding the gasket and shield.3.2.3 corrugated, nany method of embossing.3.2.4 coupling, nthe complete assembly.3.2.5 fitting, nparts of a pipeline other than straight pipes, valves, or coup
18、lings.3.2.6 gasket, nthe elastomeric portion of the coupling.3.2.7 joint, nthe point of assembly consisting of the coupling and the joined pipes or fittings, or both.3.2.8 manufacturer clamp assembly and shield, nThe entity that attaches the clamp assembly to the shield for the couplingscovered by t
19、his standard specification.3.2.9 manufacturer gaskets, nThe entity that molds the gaskets covered by this standard specification.3.2.10 shield, nan external metallic protective device designed to protect the sealing gasket from external elements that couldcause failure of the sealing gasket.4. Mater
20、ials and Manufacture4.1 Physical properties of gaskets shall comply with Specification C564 and the dimensions, material specifications, physicaland chemical properties as shown in Fig. 1, Fig. 2, Table 1, and Table 2.4.2 Clamp assembly screws or bolts shall not have screwdriver slots.5. Elastomeric
21、 Gasket Requirements5.1 The gaskets shall be tested in accordance with Test Methods D3677 and be manufactured from a properly vulcanized virgincompound where the primary elastomer is polychloroprene (neoprene).5.2 The elastomeric gasket shall consist of one piece conforming to the physical requireme
22、nts of Specification C564. Thegaskets shall be tested by the gasket manufacturer for compliance to Specification C564 during each day of production not toexceed 24 h for each size of gasket being produced. These tests shall be performed at the manufacturer location during the timeof production. Thes
23、e tests shall include hardness, elongation and tensile strength, tear strength and compression set. Heat aging,water absorption, ozone resistance, and oil immersion tests shall be performed annually or when the formulation changes orsources of supply, whichever occurs first.5.2.1 The elastomeric gas
24、ket shall have an inside center stop that does not create an enlargement chamber or recess with a ledge,shoulder, or reduction of pipe area or offer an obstruction to flow.5.2.2 The elastomeric gasket shall be free of defects that affect the use and serviceability.6. Clamp Assembly Requirements6.1 T
25、he shield and clamp assembly shall be made of material conforming to the requirements as outlined in Section 6, Table3 and Fig. 3.6.1.1 All parts shall be of 300 series stainless steel. All parts made from round stock shall be of 300 series stainless steel(excluding copper bearing alloys). The shiel
26、d shall be corrugated or otherwise provided with a mechanism to accommodatemaximum and minimum ODs of pipe and fittings and include 2 stainless steel bands for sizes 112 to 4 in. and 4 bands for 5 to10 in. and 6 bands for 12 and 15 in. Each tightening device housing shall interlock with a band at th
27、e unslotted end. The bandsare to be fastened to the shield by riveting or such other method that will insure that the bands will not become separated fromthe shield. The shield and clamp assembly shall comply with dimensions and material specifications, as are given in Table 3, Fig.3, and Fig. 4.6.1
28、.2 Clamp assemblies shall be tested to withstand no less than 125 % of manufacturers stated installation torque or a minimumof 60 lbfin. (6.78 Nm) of applied torque, whichever is greater, without visible signs of failure. The clamp assembly shall be tested4 Available from Factory Mutual Research, 11
29、51 Boston-Providence Turnpike, Norwood, MA, 02062.C1277 142over a steel mandrel of the appropriate diameter and torqued as required. These tests shall be performed randomly on selectedsamples during the course of production as needed but not less than one clamp per shift per size during band product
30、ion.6.1.3 The clamped shield shall meet the requirements of Table 3.6.1.4 The couplings shall meet the dimensional requirements of Fig. 3.7. Couplings Requirements and Test Methods7.1 Assemble each coupling tested according to the manufacturers instructions between two sections of randomly selectedh
31、ubless cast iron soil pipe meeting the requirements of CISPI-301 or Specification A888 and conduct the following test: deflectionand shear. In addition, an unrestrained hydrostatic test will be performed between two sections of machined steel pipe. Theunrestrained hydrostatic tests shall be performe
32、d on randomly selected couplings of each size during the course of production usingfirst article selection not to exceed 30 days. The deflection and shear tests shall be performed on randomly selected couplings ofeach size during production whenever a change of design occurs or not to exceed 120 day
33、s, whichever is the shorter period.7.1.1 Deflection Test:FIG. 1 Rubber GasketC1277 143NOTE 1Dimensions found in these drawings are for informational purposes only. The dimensions A and B found in the table are mandatory.Dimensions D1 and D2 found in the table are reference for mold design. Tolerance
34、s are found in Fig. 2. The center stop width is (3/32) .094 plus the5 draft angle. Sealing ring shape and dimensions are to manufacturers design.Dimensions112 in. 2 in. 3 in. 4 in. 5 in. 6 in. 8 in. 10 in. 12 in. 15 in.A 1.062 1.062 1.062 1.062 1.500 1.500 2.000 2.000 2.750 2.750B 2.125 2.125 2.125
35、2.125 3.000 3.000 4.000 4.000 5.500 5.500D1 1.531 1.968 2.968 4.000 4.968 5.968 7.968 9.975 12.000 15.200D2 1.937 2.343 3.343 4.406 5.343 6.343 8.343 10.350 12.430 15.650NOTE 2Dimensional Tolerances to be RMA Class 3 (See Table 1).FIG. 1 Rubber Gasket (continued)C1277 1447.1.1.1 Atest apparatus such
36、 as the one shown in Fig. 5 is suggested. Other testing apparati that provide restraint to the assemblyshall also be permitted. Close the outboard ends of the pipe with test plugs.7.1.1.2 Fill the assembly with water, expel all air, and hydrostatically pressurize to 4.3 psi (29.6 kPa) for the durati
37、on of the test.One pipe shall be rigidly supported and while the assembly is under pressure, raise the opposite end of the other pipe 12 in. (12.7mm) per lineal foot of pipe. Maintain the pressure for 5 min. Any leakage shall mean failure.7.1.2 Shear Test:7.1.2.1 Support two joined lengths of random
38、ly selected hubless cast iron soil pipe on blocks, a minimum of 112 in. (38.1 mm)high, at three locations. One length shall be a minimum of 24 in. (609.6 mm) in length, supported on blocks, one near theNOTE 1Dimensions found in these drawings are for informational purposes only. The dimensions found
39、 in the table are mandatory. Tolerances arefound in Fig. 2. Sealing ring shape and dimensions are to manufacturers design.Dimensions for Reducing Sleeves2 1-12 3 2 4 3A 1.062 1.062 1.062B 2.125 2.125 2.125C 0.297 0.594 0.625D1 1.531 1.968 2.968D2 1.937 2.343 3.343D3 2.343 3.343 4.406NOTE 2Dimensiona
40、l Tolerances to be RMA Class 3 (See Table 1).FIG. 2 Reducing Rubber GasketC1277 145uncoupled end, and the other immediately adjacent to the couplings. Firmly restrain this length in position as shown in Fig. 6. Theother coupled length shall be a minimum of 5 ft (1.52 m) in length and supported by a
41、single block 6 in. (152.4 mm) from theend of the pipe.7.1.2.2 Fill the assembly with water and expel all air. Apply a load of 50 lb/in. of nominal diameter at a point 6 in. (152.4 mm)from the edge of the coupling upon a 12 in. (304.8 mm) length of (3 by 3) angle iron or load distribution pad located
42、 on the topof the pipe immediately adjacent to the coupling of the pipe having one support only. Under this loading there shall be no visibleleakage or displacement of more than 38 in. (9.53 mm) from true alignment adjacent to the coupling, when an internal pressureequivalent to a 10 ft (3.05 m) hea
43、d of water 4.3 psi (29.6 kPa) is applied. Maintain the load and internal pressure for 15 min.7.1.3 Unrestrained Hydrostatic Test:7.1.3.1 Assemble each coupling tested according to the manufacturers instruction between two sections of machined steel pipeand conduct the thrust test.7.1.3.2 The assembl
44、y shall consist of a maximum outside diameter pipe connected to a minimum outside diameter pipe withdiameters as referenced in Table 4 and lengths as shown in Fig. 7. Machine the plain ends of the pipe to be used for the thrust testto the correct diameters. Plain ends shall have 0.015 in. (0.38 mm)
45、deep grooves machined circumferentially around them at 18in. (3.18 mm) intervals down the pipe section for a distance equal to that covered by the elastomeric sleeve of the coupling beingtested. The tool used to machine the grooves shall have a 60 inclined angle and cut into the pipe from a perpendi
46、cular position.The surface between the grooves shall be a lathe turned surface of 125 RMS.7.1.3.3 The plain ends of the pipe for the thrust test shall be uncoated and cleaned with acetone and thoroughly dried beforeeach assembly.7.1.4 Test Method:7.1.4.1 Support the pipe assemblies in a manner that
47、does not restrain joint movement as shown in Fig. 7.7.1.4.2 Fill the pipe assembly (as required in 7.1.3) with water, expelling all air. Increase the hydrostatic pressure at a rate of1 psi (6.9 kPa) every 30 s until the specified test pressure is reached. The specified test pressure shall be 20 psi
48、(137.9 kPa) for112 in. (38.1 mm) through 5 in. (127 mm), 18 psi (124.1 kPa) for 6 in. (152.4 mm), 10 psi (68.9 kPa) for 8 in. (203.2 mm), and6 psi (41.4 kPa) for 10 in. (254 mm) pipe, 12 in. (305 mm), and 15 in. (380 mm). When the specified test pressure is reached, holdit for 5 min. Any leakage or
49、axial joint movement of more than 0.150 in. (3.81 mm) shall mean failure.8. Markings and Identification8.1 MarkingThe gasket shall be marked with raised letters. This marking shall consist of pipe size, country of origin,manufacturers identifying mark, and Specification C564. Such marking shall not exceed 0.02 in. in relief.8.2 The shield and clamp assembly shall be marked with indented letters. All marking shall be placed on the band assemblies.Marking on the band shall consist of pipe size. Marking on the screw housing shall consi
